.login-form {
    /*position: fixed;*/
    padding-top: 100px;
    padding-left: 20px;
    width: 600px;
    height: 300px;
    top: 0;
    left: 0;
    right: 0;
    bottom: 100px;
    background-color: #ffffff;
    margin: auto;
    margin-top: 100px;

  /*position: absolute;*/

  /*left: 300px;*/

  /*top: 300px;*/

  /*width: 300px;*/

  /*height: 300px;*/

  box-shadow: 0px 0px 1000px 2px #d2d2d2;

}

#username {
    width: 300px;
    /*margin: auto;*/

}

#password {
    margin-top: 20px;
    width: 300px;
    /*margin: auto;*/
}
.bottom{
    /*position: center;*/
    width: 600px;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    margin: auto;
    margin-top: 25px;
}